Correct! Energy-efficient appliances and products can save about a third on energy bills. Look for products that meet strict ENERGY STAR efficiency guidelines. Often, replacing appliances with more efficient units will save on energy costs. In many cases, switching from an electric appliance to a natural gas one will save even more over time in energy operating costs.

INCORRECT! The energySMART answer: Energy-efficient appliances and products can save about a third on energy bills. Look for products that meet strict ENERGY STAR efficiency guidelines. Often, replacing appliances with more efficient units will save on energy costs. In many cases, switching from an electric appliance to a natural gas one will save even more over time in energy operating costs.

Part 1: Make a Selection

Part 2: Make a Selection

Correct! Natural gas has the lowest percentage of carbon dioxide emissions with 1,178 million metric tons or 20 percent. Coal is a distant second with 2,142 million metric tons or 36 percent, and petroleum has the highest with 2,614 million metric tons or 44 percent of total carbon dioxide emissions.

Question 7 of 10

Correct! That statement is false. Americans saved enough energy in 2008 to avoid greenhouse gas emissions equivalent to those from 29 million cars. Americans saved $19 billion on their utility bills as well!

INCORRECT! That statement is false. Americans saved enough energy in 2008 to avoid greenhouse gas emissions equivalent to those from 29 million cars. Americans saved $19 billion on their utility bills as well!

Question 10 of 10

Correct! All of the above. Changing your air filter every three months will bring you all of these benefits as well as increase the life of your equipment. Eliminating dust buildup that can block air saves energy and decreases your energy costs.

INCORRECT! All of the above. Changing your air filter every three months will bring you all of these benefits as well as increase the life of your equipment. Eliminating dust buildup that can block air saves energy and decreases your energy costs.